使用 <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /> 时，Android 12 会阻止触摸

Question

我用来<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />显示一个覆盖在其他应用程序上的弹出窗口，但 android 12 阻止了触摸。根据文档，它会阻止触摸事件，我如何允许在 android 12 上进行触摸。

这是 android 12 行为更改触摸事件的链接 https://developer.android.com/about/versions/12/behavior-changes-all#untrusted-touch-events

import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.hardware.input.InputManager;
import android.os.IBinder;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;


public class FloatWidgetService extends Service {

    private WindowManager mWindowManager;
    private View mFloatingWidget;

    public FloatWidgetService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        final WindowManager.LayoutParams params;
        mFloatingWidget = LayoutInflater.from(this).inflate(R.layout.layout_floating_widget, null);
        mFloatingWidget.setFilterTouchesWhenObscured(true);
        params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.WRAP_CONTENT,
               WindowManager.LayoutParams.TYPE_PHONE,
               WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                PixelFormat.TRANSLUCENT);
        params.gravity = Gravity.TOP | Gravity.START;
        params.x = 0;
        params.y = 100;
        try {
            mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
            mWindowManager.addView(mFloatingWidget, params);


            mFloatingWidget.findViewById(R.id.root_container).setOnTouchListener(new View.OnTouchListener() {
                private int initialX;
                private int initialY;
                private float initialTouchX;
                private float initialTouchY;

                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    switch (event.getAction()) {
                        case MotionEvent.ACTION_DOWN:
                            initialX = params.x;
                            initialY = params.y;
                            initialTouchX = event.getRawX();
                            initialTouchY = event.getRawY();
                            return true;
                        case MotionEvent.ACTION_UP:
                            int Xdiff = (int) (event.getRawX() - initialTouchX);
                            int Ydiff = (int) (event.getRawY() - initialTouchY);
                            if (Xdiff < 10 && Ydiff < 10) {
                                startActivity(new Intent(getApplicationContext(), MainActivity.class));
                                stopSelf();
                            }
                            return true;
                        case MotionEvent.ACTION_MOVE:
                            params.x = initialX + (int) (event.getRawX() - initialTouchX);
                            params.y = initialY + (int) (event.getRawY() - initialTouchY);
                            mWindowManager.updateViewLayout(mFloatingWidget, params);
                            return true;
                    }
                    return false;
                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (mFloatingWidget != null) mWindowManager.removeView(mFloatingWidget);
    }

}

Answer 1

对于窗口类型，请尝试以下操作：

val windowType: Int = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
} else {
    WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY
    WindowManager.LayoutParams.TYPE_SYSTEM_ALERT
}

请参阅TYPE_APPLICATION_OVERLAY。

这是 Kotlin，但您应该能够轻松转换为 Java。